Reddit mentions of Power Probe III Clamshell - Red (PP3CSRED) [Car Automotive Diagnostic Test Tool, Digital Volt Meter, AC/DC Current Resistance, Circuit Tester]

Amperage would be nice for checking on draws and circuit load, but unless you have a decent understanding of electrical it's probably a waste. Voltage and continuity are probably the most used features. A Power Probe might be a better option than a basic meter. It can tell you where you're power and grounds are.

amazon.com/dp/B00G4YUWMC

http://www.tooltopia.com/mayhew-tools-29910.aspx

http://www.tooltopia.com/otc-tools-6295.aspx

Both of those are a little cheaper on tooltopia and you don't have to pay tax (or at least, I don't, idk what the rules are for who does and doesn't) or shipping on orders over $75.

For long term use, I'd probably trust Astro Pneumatic's brand name over Ztech. I've always had great luck from AP tools, and they have an identical looking kit for $9 more on Amazon. Many years ago, I bought a cheap (holy crap, just looked it up and I paid almost $50 for that shipped) piston kit from ebay, it lasted about a year. The pin on the main plate sheared off. But that was a long time ago, maybe they're cheaper and better now?

Something to keep in mind with that inner tie rod tool, it doesn't have a lifetime warranty, and the mechanism will break at some point, and it's $52 for the replacement part. I have one, but I rarely use it. It's usually easier to just turn the wheel all the way and use some Knipex Cobra pliers.

I do most of my tool shopping between Amazon, Tooltopia, and eBay anymore. Between the three, you can usually find a pretty good deal.

I certainly trust OTC tools, I've never really had any problems and have a lot of them (and a lot of them that are rebranded as Mac/Matco/Cornwell).

These are the spring compressors I have, only problem I've had is that the little nub on the pin that prevents flying parts if it slips? That thing sometimes is too large to fit over the spring.

I have a Mac EM710 multimeter, and a Fluke 77 IV also. I like the Fluke better because the Mac turns on in AC for whatever freaking reason (srsly, it's a multimeter primarily marketed at auto techs working exclusively with DC, made by a company that almost exclusively sells to auto techs, but the damn thing turns on in AC every single time. wtf.), but I like the Mac better because the body is more square so it'll sit on it's side easier.

Power Probe's are also super duper handy, you can quickly check if something has power and ground without having to change the other end of your test light, and you can quickly apply power to check if a component is functioning. And they're super cheap on Amazon these days. That makes me sad, I paid like $200 for my PP3!

Or, buy a tool designed for this.... https://www.amazon.com/dp/B00G4YUWMC/ref=psdc_14244461_t1_B075S1QC6R

There are cheaper ones, but a logic probe can provide power to any circuit to test them. Also an extremely useful tool for any electrical diagnostics.

Guessing it is... Plan on testing mine once I get this in. https://www.amazon.com/Power-Probe-III-Clamshell-Red/dp/B00G4YUWMC/ref=sr_1_3?ie=UTF8&qid=1469881011&sr=8-3&keywords=power+probe

Once I know for sure it the switch then plan on replacing.